| Ronkonkoma to Oakleaf Plantation (Florida) | 882.10 mi (1,419.59 km) |
| Ronkonkoma to Oakley (California) | 2,567.30 mi (4,131.67 km) |
| Ronkonkoma to Oakton (Virginia) | 258.03 mi (415.27 km) |
| Ronkonkoma to Oakville (Missouri) | 927.88 mi (1,493.27 km) |
| Ronkonkoma to Oatfield (Oregon) | 2,475.96 mi (3,984.67 km) |
| Ronkonkoma to Ocala (Florida) | 950.73 mi (1,530.05 km) |
| Ronkonkoma to Ocean Acres (New Jersey) | 95.31 mi (153.38 km) |
| Ronkonkoma to Ocean City (New Jersey) | 131.77 mi (212.07 km) |
| Ronkonkoma to Ocean Pines (Maryland) | 198.83 mi (319.99 km) |
| Ronkonkoma to Ocean Pointe (Hawaii) | 5,011.53 mi (8,065.27 km) |
| Ronkonkoma to Ocean Springs (Mississippi) | 1,132.65 mi (1,822.82 km) |
| Ronkonkoma to Oceanside (California) | 2,466.29 mi (3,969.11 km) |
| Ronkonkoma to Oceanside (New York) | 29.29 mi (47.13 km) |
| Ronkonkoma to Ocoee (Florida) | 969.17 mi (1,559.74 km) |
| Ronkonkoma to Oconomowoc (Wisconsin) | 804.36 mi (1,294.49 km) |
